Regarding the occult symbolism thing, there's a german youtube channel who covers the topic and he made video summarizing his finding for an english speaking audience.

https:// www.youtube.com/watch?v=Ofdj76JBBJY

the most interesting part imo starts at about 2:30, basically there's a song called "Julius Cesar" by a rapper named "Haftbefehl", which features the line "I got my wing doors open, sitting on the roof and I fly. While the holy ghost thinks: copilot suicide"

The song was released in 2014 and the line doesn't really relate to any other part of the song and doesn't make sense in any context. In 2015 the germanair planecrash happened, which was caused by a suicidal copilot.

Out of all the connections drawn between occult messaging and the music industry, to this day this is the thing that stood out to me the most and really sends a shiver down my spine